User`s guide

Installation • 11
2.5 Base Address Setting
The ACL-7120A requires eight consecutive address locations in the I/O
address space. The base address of the ACL-7120A is restricted by the
following conditions:
1.
The base address must be within the range 200hex to 3FFhex.
2.
The base address should not conflict with any PC I/O address.
The ACL-7120A default I/O port base address 0x2A0 is set by the 6 position
DIP switch SW1 (refer to Figure 2.2). Possible address settings for I/O ports
are from Hex 200 to Hex 3FE and are listed in Table 2.2.
Default Base Address = 0x2A0
123456
ON
A ( 9 8 7 6 5 4 )
Figure 2.2 Default Base Address Setting
I/O port address(hex)
1
A9
2
A8
3
A7
4
A6
5
A5
6
A4
200-20F OFF ON ON ON ON ON
2A0-2AF (*) OFF ON OFF ON OFF ON
2B0-2BF OFF ON OFF ON OFF OFF
3D0-3DF OFF OFF OFF OFF ON OFF
3E0-3E0 OFF OFF OFF OFF OFF ON
3F0-3FF OFF OFF OFF OFF OFF OFF
* Default setting
A9,...,A4 correspond to PC address lines
Table 2.1